Rare earth-added ceramic material formula

Abstract

The invention discloses a rare earth-added ceramic material formula. The rare earth-added ceramic material formula is prepared by the following raw materials in parts by weight: 6-9 parts of cobalt powder, 6-9 parts of nickel powder, 8-12 parts of molybdenum powder, 7-12 parts of tungsten carbide powder, 5-12 parts of high impact polystyrene (HIPS), 3-9 parts of styrene butadiene rubber, 2-9 parts of nanometer oxide particle enhancer, 5-12 parts of flatting agent, 3-9 parts of polyamide resin, 4-8 parts of tantalum carbide powder, 0.5-1 part of chromium carbide and vanadium carbide powder, and 0.2-1 part of rare earth. The rare earth-added ceramic material formula effectively prevents the rare earth from being oxidized, and enhances the bending strength and toughness of metal ceramic.

Description

technical field [0001] The invention relates to the technical field of material science, in particular to a rare earth-added ceramic material formula. Background technique [0002] The existing cermet tools are widely used in the field of metal cutting. High cutting speed and high workpiece surface cleanliness are a notable feature of its application. Since its density is only half of that of cemented carbide, its cost per piece is comparable to that of hard alloy. Compared with high-quality alloys, PCD, and PCBN, it has great advantages. For a long time, although cermet tool materials have high hardness, they have poor high-temperature hardness, high brittleness, and poor toughness. It is incompetent for the workpiece material, and its durability and life are not long. In addition, because Ti(CN) cermet needs a considerable amount of Mo and Ni for sintering, it affects the high temperature performance. With the raw material manufacturing technology With the improvement of ...

AI Technical Summary

Problems solved by technology

[0002] The existing cermet tools are widely used in the field of metal cutting. High cutting speed and high workpiece surface cleanliness are a notable feature of its application. Since its density is only half of that of cemented carbide, its cost per piece is comparable to that of hard alloy. Compared with high-quality alloys, PCD, and PCBN, it has great advantages. For a long time, although cermet tool materials have high hardness, they have poor high-temperature hardness, high brittleness, and poor toughness. It is incompetent for the workpiece material, and its durability and life are not long. In addition, because Ti(CN) cermet needs a considerable amount of Mo and Ni for sintering, it affects the high temperature performance. With the raw material manufacturing technology With the improvement of equipment manufacturing level, the strengthening effect of rare earth elements on the phases of cermets greatly improves the strength of cermet materials under the premise of ensuring high hardness. However, due to the active nature of rare earths and easy oxidation, rare earths are added in the form of oxides. , other reactions are difficult to occur, the effect of purifying the interface is basically small or non-existent, and there is no rare earth solid solution strengthening

When added in the form of pure rare earths, hydrides, etc., the added rare earths will all become oxides during the drying process of the slurry; although the oxidation degree of the added rare earths can be reduced by using a vacuum drying oven, this process is extremely difficult to control

And the addition of rare earth in the cermet is small, which is easy to segregate, resulting in uneven composition